!23 Fix compile error which report sighold is deprecated and systemd error: Unit file isnsd.socket does not exist.

From: @wenchao-hao
Reviewed-by: @wubo009
Signed-off-by: @liuzhiqiang26

0004-libisns-remove-sighold-and-sigrelse.patch

@@ -0,0 +1,44 @@
+From e7dac76ce61039fefa58985c955afccb60dabe87 Mon Sep 17 00:00:00 2001
+From: Rosen Penev <rosenp@gmail.com>
+Date: Wed, 29 Apr 2020 15:55:55 -0700
+Subject: [PATCH] libisns: remove sighold and sigrelse
+
+The man page says that these are deprecated. Use sugprocmask as a replacement.
+---
+ include/libisns/util.h | 16 ++++++++++++----
+ 1 file changed, 12 insertions(+), 4 deletions(-)
+
+diff --git a/include/libisns/util.h b/include/libisns/util.h
+index e5ed037..f1b97f0 100644
+--- a/include/libisns/util.h
++++ b/include/libisns/util.h
+@@ -41,14 +41,22 @@ char *		print_size(unsigned long);
+  */
+ static inline void signals_hold(void)
+ {
+-	sighold(SIGTERM);
+-	sighold(SIGINT);
++	sigset_t s;
++
++	sigemptyset(&s);
++	sigaddset(&s, SIGTERM);
++	sigaddset(&s, SIGINT);
++	sigprocmask(SIG_BLOCK, &s, 0);
+ }
+ 
+ static inline void signals_release(void)
+ {
+-	sigrelse(SIGTERM);
+-	sigrelse(SIGINT);
++	sigset_t s;
++
++	sigemptyset(&s);
++	sigaddset(&s, SIGTERM);
++	sigaddset(&s, SIGINT);
++	sigprocmask(SIG_UNBLOCK, &s, 0);
+ }
+ 
+ /*
+-- 
+1.8.3.1
+

0005-Do-not-install-isnsd.socket-in-isnsd.service.patch

@@ -0,0 +1,25 @@
+From 040ee0d91adb8b2f6dd3705e3c193a77b40e69c5 Mon Sep 17 00:00:00 2001
+From: Wenchao Hao <haowenchao@huawei.com>
+Date: Thu, 29 Apr 2021 16:07:59 +0800
+Subject: [PATCH] Do not install isnsd.socket in isnsd.service
+
+isnsd.socket is removed from rpm package, so here remove it from isnsd.service
+to fix systemd error message
+
+Signed-off-by: Wenchao Hao <haowenchao@huawei.com>
+---
+ isnsd.service | 1 -
+ 1 file changed, 1 deletion(-)
+
+diff --git a/isnsd.service b/isnsd.service
+index 76eac6c..3f5fb21 100644
+--- a/isnsd.service
++++ b/isnsd.service
+@@ -12,4 +12,3 @@ LimitCORE=infinity
+ 
+ [Install]
+ WantedBy=sysinit.target
+-Also=isnsd.socket
+-- 
+1.8.3.1
+

open-isns.spec

@@ -1,6 +1,6 @@
 Name:           open-isns
 Version:        0.100
-Release:        3
+Release:        5
 Summary:        The iSNS server and client programs
 License:        LGPLv2+
 URL:            https://www.github.com/open-iscsi/open-isns
@@ -9,6 +9,8 @@ Source0:        https://www.github.com/open-iscsi/open-isns/archive/v%{version}.
 Patch1:      0001-Fix-the-issue-of-ignoring-the-return-value.patch
 Patch2:      0002-Fix-compiler-issue-when-not-in-security-mode.patch
 Patch3:      0003-Fix-586-compile-issue-and-remove-Werror.patch
+Patch4:      0004-libisns-remove-sighold-and-sigrelse.patch
+Patch5:      0005-Do-not-install-isnsd.socket-in-isnsd.service.patch
 
 BuildRequires:  gcc git systemd automake autoconf make
 BuildRequires:  openssl-devel systemd-devel
@@ -96,6 +98,12 @@ install -p -m 644 isnsd.service %{buildroot}%{_unitdir}/isnsd.service
 %{_mandir}/man8/*
 
 %changelog
+* Fri May 14 2021 Wenchao Hao<haowenchao@huawei.com> - 0.100-5
+- Do not install isnsd.socket in isnsd.service
+
+* Fri May 14 2021 Wenchao Hao<haowenchao@huawei.com> - 0.100-4
+- libisns: remove sighold and sigrelse
+
 * Wed Nov 4 2020 lixiaokeng<lixiaokeng@huawei.com> - 0.100-3
 - add make tests